HI all,
At the server I get a new orderheader without order-number, the ID. I want to look up a special number-serie to get the next order-number. The DD does not increment the number automatically but it demands a number that is not used before.

In what method can I grab the incoming POST in order to look up the number and change the field in the record before all controlling starts.

Or can I reach the Json before it comes to the DD?